Car-bolster.



W/ffiesse s /5/ A? U/Z Awe/for m fines .S. ffac/ivrme J. S. MAGFARLANE.

GAB BOLSTER. APPLICATION FILED APR.10, 1913.

a 1,1 1 9,027, Patented Dec. 1, 1914.

line 803, Fig. 2. Fig.

' ings, and 6 UNITED STATES PATENT OFFICE.

JAMES s. M QFARL ANE, or mourn-EAL, QUEBEC, CANADA, Assreivon '10 CANADIAN cAn & FOUNDRY 00., LIMITEnor MONTREAL, CANADA.

CAR-BOLSTER.

Patented Dec. 1, 1914.

Application filed April 10, 1913. Serial No. 760,267.

To all whom it may concern Be it known that 1, JAMES LANE, inceof Quebec and Dominion of Canada, have invented certain new and useful Improvements in Car-Bolsters, of which the following is a tion.

This invention relates to improvements in railway car truck bolsters, and the object is S. MAcFAnto provide a bolster which may be more easily, quickly and cheaply manufactured.

The invention resides particularly in the filler which is locatedon the end of the compression around which the end of the tension member is wrapped.

In the dr'awlngs which illustrate the invention :Figure 1 is a partial elevation of a trussed bolster constructed according to this 11111811131011. Fig. 2 1s aplan V ew of the cross plate. Fig. 3 1s a sectional view on the viewon the line.4-4, Fig. 2, showing the plate in position between the members of the bolster.

Referring more particularly to the draw- 5 designates the compression member the tension member of a trussed bolster. The compression and tension members are bowed in opposite directions at their centers, and are "spaced apart by a strut 7. The ends of the compression member at the point where they meet the tension member are bent parallel therewith, and the ends of the tension member bent over the ends of the compression member. Preferably the compression member is of standard channel section, arranged with the flanges downward, while the tension member is a plain strap sufficiently narrower than the compression member to pass between the flanges thereof.

of the city of Montreal, in the Provfull, clear, and exact descripmember. of a trussed bolster, and

passageof the 4 is a cross sectional provided with a heavy lip 10 projecting below the flange a distance approximately equal to the web, thickness of'the compression nember, as is clearly shown in Fig. 4:. From the lower edge of the lip to the upper surface of the plate, the surface is semi-circularly curved, as indicated at 11.

. Midway between its ends, the plate is provided with a depending lug 12 centrally apertured in substantially conical form, as

indicated at 13, the largest part of said aperture being at the bottom or free endof the lug. Toward each end of the plate, apertures Hare provided for the passage of rivets 15. j v

In making the bolster, the compression member is bentto shape and the necessary rivet holes punched therein. At the same time that the rivet holes are punched in the ends, a central hole 16 is punched for the lug 12. This hole is punched from the upper or outer side of the channel, with the result that the displacement of the metal in the punching operation forms the hole slightly larger at the bot tom. The cross late is then placed in position on the end of the compression member with its lug 12 projecting through the hole 16, into which it is expanded by the insertion of a suitable tool into the conical bore 13. Theconnection thusv made between the cross plate and compression member is of no great strength, but is amply sufiicient to hold the cross plate firmly in place on the end of the compression member during the bending over of the tension member. The lip 10 of the cross plate engages the end of the compression member and holds the plate against any rotary movement on the lug 12. It will be remembered that the depth of cross plate lip is substantially equal to. the

thickness of compression member web, so that the lower edge of the lip will be approximately level with the lower surface of the web. The tension member is bent up around the end of the compression member, the rounded surface 11 of the filler or cross plate preventing the bend being so sharp as to injure the metal of the tension memher. The tension member is now bored to receive the rivets 15, which pass through the apertures 14 previously formed in the cross plate and hold all three members rigidly in position.

bolster, a cross plate hav flange around the edges to hold the plate in an a lip projecting below the flange at the elevated edge of the plate, the

edge of said lip larly curved.

2. A trussed bolster comprising a compression member, a tension member looped and plate being semicircuat the ends over the ends of'the compression member, across plate secured to the compression member and covering the end thereof, and a lug on said cross plate expansible Within an aperture of the compression member to hold the cross plate during bending of the tensionmember.

A device of the character described comprising a rectangular plate, a peripheral supporting flange on one side of said plate, the flange on one longitudinal edge of the plate being deeper than on the other whereby clined position, a 11p of the plate depending below said deeper Copies of this patent may be obtained'for said plate Wlll be supportedin inflange, the edge of said lip and plate being semi-circularly curved from the bottom of the lip to: the upper surface of the plate, from the flanged surface of the plate intermediate the ends thereof, said lug being formed With a conical bore.

- A trussed bolster comprising a compression member, a tension member Wrapped at the ends over the ends of the compression member, a crossplate covering the endof the compression member, and a hollow lug on the underside of said cross'plate projecting through an aperture of the compression member, said lug being formed to be expansiblein said aperture on theopposite side of the compressionmember from the plate, whereby said plate Will be held rigidly to the compression member during bending of the tension member.

In Witness whereof-,1have'hereunto set my hand in the presence of tWo Witnesses.

. JAMES s. MacFARLANE.

WVitnes'ses: I

STUART R. W. ALLEN, G, M. MoRELAND.

five cents each, by addressing the Commissioner-of Patents,

- Washington, 1)."0.

and I a lug projecting 

